GuessWordGame

1. Generate a random four-letter word from database
2. Four choices can be selected, l - guess a letter, g - guess the word, t - give up this round, q - quit the game

l

If choose l and the entered letter is contained in word, shows how many letters in the word. Guess wrong, request re-choice

g

Guess the word, show the result right or wrong

t

Give up this word, going next word

q

Quit the game and show the statistical information about this time